合算的英文：
worthwhile
reckon up

参考例句：

pretty soft
[美俚]容易的,便当的;合算的

You'd better lock in the best exchange rates and buy foreign currency before you leave.
为求合算，出国前就要抓住最好汇率把外币换好。

Paying price
合算价格

Charter flig hts give/offer the best value for(your)money.
乘坐包机最合算.

It's a good buy at that price.
这是一笔价钱合算的买卖。

It's a good buy at that price.
这是一笔价钱合算的买卖。

This is a lucrative business, Symantec has discovered.
赛门铁克发现这是一项合算的生意。

Did you get a good trade-in on your sewing machine?
你以旧缝纫机折价换新合算吗?

This car is good value for your money.
这辆汽车你买得很合算。

This was still a good buy even at the higher price.
即使价格更高一些，这仍然很合算。

worthwhile是什么意思：
adj. 值得做的；有价值的

To say this is worthwhile.||It is worthwhile to say this.
这话值得说。

Nursing is a very worthwhile career.
护理工作是很值得干的职业。

To follow these movements of sunspots is worthwhile for every solar observer
任何一个太阳观测者值得花时间和精力去跟踪观测太阳黑子的这种移动。

It is worthwhile to ponder the reasons to copy the famous brand.
认真反思一下仿冒知名品牌的原因是有价值的。

It might have been worthwhile to draw out these resemblances
抽出这些相似点也许是值得的。

reckon是什么意思：
v. 认为；被看做是；料想；估计

Inevitably, the moment of reckoning arrived.
无法逃避，算总账的时候终于来到了。

She is a force to be reckoned with.
她是一个需要认真对待的有影响力的人物。

I cannot reckon you as an admirer.
我不能把你算作一名仰慕者。

The artist is reckoned (to be / as / as being) a freak.
艺术家被看作怪人。

Do you reckon my idea is ok?
你看我的主意好吗？